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uworld > msk2 > Flashcards

msk2 Flashcards

1
Q

bluish tumor under nail bed

A

glomus tumor or subungual melanoma (pigmentation)

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2
Q

suprapatellar bursitis vs prepatellar bursitsi

A

repetiiive anterior knee truam: prepatellar bursitis: prolonged kneeling

suprapatellar bursitis: running; prolonged quad activity

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3
Q

tartrate resistant acid phosphatase, urianry hydroxyproline , urinary deoxypyridinoloine measure

A

osteoclastic activity

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4
Q

inability to extend knee against gravity

A

patellar fracture

mvc, landing on feet after falling from height

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5
Q

excessive joint widening on valgus stress

A

mcl

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6
Q

inability to flex knee against resistance

A

hamstring muscles injury

biceps femors, semitendinosus, semimebmranonuss, gracilis, gastrocnemisu, sartorisu

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7
Q

impingement bw acromion and head of humerus affects

A

supraspinatus tendon

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8
Q

impaired osteoid production by osteoblasts

A

osteogenesis imperfecta

type i collage is present in osteoid (organic portion of bone matrix)

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9
Q

impaired bone remodeling

A

osteopetrosis

defective osteoclasts

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10
Q

lateral ankle sprain

A

anteirot talofibular ligament

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11
Q

lateral epicondylitis is caused by overuse of

A

extensor carpi radialis brevis

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12
Q

extensor carpi radialis brevis and extesnor digitorum are involved in wrist

A

extension

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13
Q

overuse of abductor pollicus longus and brevis lead to de quervain tenosynovitis causing thumb and

A

wrist flexion pain

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14
Q

parvovirus b19 in adults

A

symmetric polyarthitis involivn pip, metacarpal knee and ankle joints

arthritis is self limited and non destructive

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15
Q

adult osteomyelitis

A

epiphysis

common spreading is vertebral body

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16
Q

supracondylar fractures resulting in anterolateral displacement of proximal

A

radial nerve

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17
Q

supracondylar fractures resulting in anteromedial displacement of proximal fracture

A

cause median nerve and brachial artery (pulseless hand) damage

18
Q

osteocytes remain connected to each other by

A

gap junctions

send signals to and exchange nutrients and waste products w osteocytes wihtin neighboring lamella via gap junctions

19
Q

chronic lymphedema (From axillary lymph node dissection) predisopses to a

A

angiosarcoma (stewart reves syndrome)

20
Q

forcibly exhaling against closed glottis

21
Q

deforimty of long bones w hearing loss

22
Q

osteoclasts origniate from hematopoietic progeniotr cells. macrophage csolony stimualting factor and RANKL play a role

A

in onsteoclast differentiatoin

23
Q

mulinucleated mature cell

A

osteoclast ( havev up to 100 nuclei)

24
Q

fgf’s induce proliferation of

A

ostebolastic precurosr cells

25
Q

drug induced vasculitist

A

cutaneous small vessel vasculitis

penicillins, cephalosporins, sulfonamdies, phentyoin, allopurinol

26
Q

cutaneous small vesse lvasculitis features

A

nonblanching palpable purpura.
histo: perivascualr inflammation of small blood vessels w fibrinoid neucrosis and predominance of neutrophils and fragmented neutrophilic nuclei (leukocytoclastic vasculitits)

27
Q

absorbed in upper dermis ; contribute to sunburn and increase risk of malignancy

28
Q

penetrate deeper into skin and cause photoaging

A

UVA : produces ROS

29
Q

UVA produces ROS that decresase

A

collagen fibril production and along w upregulation of MMP (including collageneases) that degrade type I and 3 collagen and elastin

30
Q

photoaging

A

graudal thinning of epidermis
rete ridges at dermoepidermal junction become flattened
crosslinking of collagen

31
Q

innervates lateral leg and dorsum of foot

A

superifical peroneal nerve

32
Q

the skin bw great toe and second toe

A

deep peroneal nerve

33
Q

why do ecchymoses not blanch

A

rbc not containted within vasculature

34
Q

attaches to anterior portion of intercondylar tibia

35
Q

attachest to posterior portion of intercondylar tibia

36
Q

pain from sharp pull on hand while forearm is pronated and elbow is extended

A

radial head subluxation (nursemaid ‘s elbow)

injiry to annular ligament

37
Q

radial head subluxation

A

injury to annular ligament

38
Q

prostatic plexus innervates

A

corpus cavernosum

39
Q

prostatectomy or injury to prostatic plexus can cause

A

erectile dysfunction

40
Q

incompelte degernation of central portion of fibrous tissue band connecting walls of vagina

A

imperforate hymen

41
Q

presenting signs of imperforate hymen

A

primary amenorrhea,
normal sedondary sex characeerisitics w cyclic abdominal or pelvic pain due to accumulation of menstrual blood in vagina and uterus (hematocolpos)

42
Q

mass palpated anterior to recutm

A

imperforate hymen

uworld (14 decks)

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